Which component to use for Data Grid's with selectable items?

[Chris Colman]

I've just stumbled upon the inMethod Data Grid components in Wicket
Stuff and they look and operate very nicely.
 
Are they the current state of the art in terms of data grids with
selectable rows or is there a native Data grid that supports selectable
rows in the main wicket distribution now?
 
http://wicketstuff.org/grid-examples/data-grid/item-selection.11
 
Also, what license are the inMethod libraries released under?
 
Chris